Method monitoring air pressure of automobile tire in running

A technology for monitoring automobile tires and air pressure, which is applied to tire measurement, tire parts, and measurement devices, and can solve problems such as missing alarms and false alarms

Inactive Publication Date: 2008-11-19
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can detect whether the air pressure of a certain wheel is abnormal by detecting and comparing the rotational speed of each wheel, but it is prone to false alarms or missed alarms after the vehicle turns or the tire is rotated or replaced.

Method used

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  • Method monitoring air pressure of automobile tire in running
  • Method monitoring air pressure of automobile tire in running
  • Method monitoring air pressure of automobile tire in running

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] When the wheel speed sensor is not installed on the car wheel, the hardware parts such as the wheel speed sensor, signal processing circuit, microprocessor, function selection switch circuit, status indication and alarm output should be installed independently, and the tire pressure can be realized after processing by the microprocessor. monitoring functions such as figure 1 shown.

[0067] Take a car with two axles and four wheels, two front wheels as driving wheels or two rear wheels as driving wheels as an example to illustrate the specific implementation.

[0068] (1) Calibration implementation

[0069] When calibrated according to the aforementioned method, the recorded pulse numbers of the four wheels are:

[0070] N 1 =9990,N 2 =10000,N 3 =10010,N 4 =10020

[0071] Then the correction coefficients for each round are:

[0072] k 1 = 1.0015k 2 = 1.0005k 3 =0.9995k 4 =0.9985

[0073] (2) Modification of implementation

[0074] Assuming that within a ce...

Embodiment 2

[0101] When the wheel speed sensor is installed on the automobile wheel, the present invention can share the wheel speed sensor, independently install the hardware parts such as signal processing circuit, microprocessor, function selection switch circuit, state indication and alarm output, after processing by the microprocessor, Realize the monitoring function of tire pressure, such as figure 2 shown.

[0102] Take a car with two axles and four wheels, two front wheels as driving wheels or two rear wheels as driving wheels as an example to illustrate the specific implementation. Its calibration implementation, correction implementation, comparison method implementation, and final judgment implementation are all the same as in Example 1.

Embodiment 3

[0104] When electronic control devices such as ABS, ESC, and TCS are installed on the automobile, the present invention can share wheel speed sensors, signal processing circuits and microprocessors with these devices, and independently install hardware parts such as function selection switch circuits, status indications and alarm outputs. , through the processing of the microprocessor, the monitoring function of the tire pressure is realized, such as image 3 shown.

[0105] Take a car with two axles and four wheels, two front wheels as driving wheels or two rear wheels as driving wheels as an example to illustrate the specific implementation. Its calibration implementation, correction implementation, comparison method implementation, and final judgment implementation are all the same as in Example 1.

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PUM

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Abstract

The invention discloses a method for monitoring tire pressure of a running vehicle and is characterized in that: the method can analyze and compare pulse signals output from wheel velocity sensors and then judge the working conditions such as vehicle turning, driving wheel slippage and braking conditions and simultaneously send alarm information when determining that the tire pressure is abnormal. By collecting, sorting, analyzing, comparing and judging the pulse signals output from each wheel velocity sensor of the running vehicle, the method can determine the working conditions such as turning, braking and driving wheel slippage and provide the comparative analysis of detected parameters (pulse numbers). The method is designed with the alarm mode in which the abnormal tire pressure is determined when the monitored parameter exceeds the preset threshold value for several times. The method can accurately and efficiently predict the abnormal tire pressure of the running vehicle.

Description

technical field [0001] The invention relates to a method for real-time monitoring of the air pressure of a running automobile tire. Background technique [0002] When a car is running, a blown tire is one of the important causes of vicious traffic accidents. If the tire is driven under abnormal air pressure, especially under low air pressure for a long time, it is easy to cause the temperature of the tire to rise sharply, which will eventually cause the tire cord to break and cause a blowout. Tires have ever-increasing information until they blow out. By detecting and analyzing this information, a judgment can be made on the working condition of the tire and a forecast can be made before the tire blows out. The rotational speed of the wheel and the change in the rolling radius of the wheel are important information. The change of tire inflation pressure directly affects the size of the tire rolling radius and the speed of the wheel speed, and the size of the tire rolling ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C23/06G01L27/00
Inventor 韩宗奇王立强夏怀成刘全有
Owner YANSHAN UNIV
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